Fatal head-on crash caught on camera

A MOTORIST has filmed the horrific moment another driver crossed onto the wrong side of the road and caused a head-on collision, killing a woman and leaving two others fighting for their lives.

The crash occurred on the Bussell Highway in Capel in Western Australia's south-west on Saturday.

The footage obtained by 9news shows the driver of a Toyota Landcruiser driving erratically, swerving into oncoming traffic several times.

"He's going to kill someone," the man filming says, before calling West Australian police. The Landcruiser then crashes into a Toyota, whose driver - believed to be a 61-year-old woman - died at the scene.

The RAC rescue helicopter last night flew a critically injured 45-year-old man from Usher to Royal Perth Hospital, while one woman was taken to Bunbury Regional Hospital, Perth Now reports.

Police major crash squad are investigating the crash which occurred at 4.47pm, at the intersection of Capel Drive and Bussell Highway.

The green coloured Toyota Landcruiser was travelling north in the south bound lanes of Bussell Highway when it collided with a white coloured Toyota Rav4 that was travelling south on Bussell Highway, approximately 100m south of the Capel Drive intersection.

The Landcruiser rolled over and the driver was thrown from the vehicle before it came to rest right side up and caught on fire.

A passenger in the vehicle, a 54-year-old woman from Busselton, suffered life-threatening injuries in the crash and was taken by ambulance to the Bunbury Regional Hospital.

Major Crash investigators would like to speak to anyone who may have seen the crash or the Toyota Landcruiser prior to the crash travelling on: Wonnerup Beach, Busselton; Layman Road, Busselton or Bussell Highway from Busselton to the Capel Drive intersection.